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About the Role

As a Site Reliability Engineer, you will be responsible for ensuring the stability, security, and performance of our complex and distributed systems. You will work closely with our development teams to design, implement, and maintain scalable and reliable infrastructure, and to automate and optimize our systems and processes.

Responsibilities

• Provide Technical level 2 support with direct customer contact.
• Maintain monitoring, logging, and alerting solutions using tools such as Prometheus, Grafana, and Loki, to proactively detect blockers in shift rotation and contribute to resolving complex issues in distributed systems.
• Troubleshoot network (LAN/WAN/VPN, DNS, DHCP) and storage systems (file/object/block), including provision, operation of highly available services on Linux and Kubernetes with Helm Charts.
• Maintain Infrastructure as a Code, automation and playbooks using tools such as Ansible, Terraform, GitLab CI/CD, ArgoCD, and scripting languages like Bash, Python, and Go.
• Collaborate with development teams to enhance processes and deployments, and to ensure smooth integration of new services and applications into our cloud and Kubernetes environment.
• Ensure the stable and secure operation of our platforms, including management of incidents end-to-end, from initial analysis to resolution and follow-up through Problem Management.

Requirements

• Willingness to work in a 24x7 shift model that includes nights, weekends, and holidays with a strong problem-solving and troubleshooting approach to resolve complex technical problems.
• Multiple years of experience as a Site Reliability Engineer or in a related role (Linux System Administrator, Platform Engineer, DevOps/Infrastructure Engineer, Full Stack Developer).
• Strong Experience with automation tools (e.g., Ansible, SaltStack), monitoring and observability tools (e.g., Prometheus, Grafana, Loki), and logging and alerting solutions (e.g., ELK Stack).
• Strong Experience with virtualized environments, including Qemu/KVM, OpenStack, Proxmox, Cloud Storage technologies (File, Object, Block) and proficient knowledge of Docker & Kubernetes (K8s).
• Proficiency in at least one programming or scripting language (e.g., Go, Python, Bash) for automation and monitoring tasks.
• Experience with code management is required, with knowledge of merge conflicts, feature branches, merge requests, and continuous integration (CI/CD) being a plus.
• Experience with RDMA, InfiniBand, and RoCE protocols.
• Strong experience with Linux MD RAID (mdadm , sedadm) and LVM.
• Proficiency in Linux performance tuning and network stack debugging (e.g., ethtool, perf, tcpdump, ibstat, ibtop).
• Experience with S3, Ceph and software-defined networks.
• Experience with established software development practices, including code reviews, build processes, packaging, and testing.
• Must be fluent in German and English. At least B2 CEFR Level.
• Candidates must undergo a security check.

Skills

• Ansible
• Terraform
• GitLab CI/CD
• ArgoCD
• Bash
• Python
• Go
• Prometheus
• Grafana
• Loki
• LAN/WAN/VPN
• DNS
• DHCP
• Linux
• Kubernetes
• Helm Charts
• SaltStack
• ELK Stack
• Qemu/KVM
• OpenStack
• Proxmox
• Docker
• RDMA
• InfiniBand
• RoCE
• Linux MD RAID
• mdadm
• sedadm
• LVM
• ethtool
• perf
• tcpdump
• ibstat
• ibtop
• S3
• Ceph
• software-defined networks

Location

• Berlin

Work Type

• 24/7 shift basis
• Hybrid working model
• Shift working hours

Experience Level

• Multiple years of experience

Education Level

• B2 CEFR Level

Benefits

• Hybrid working model.
• Shift working hours.
• At some locations a subsidized canteen and various free drinks.
• Modern office space with very good transport connections.
• Various employee discounts for activities and products.
• Employee events such as summer and winter parties, as well as workshops.
• Numerous training and development opportunities.
• Various health offers, such as sports and health courses.

About the Company

• IONOS is the leading European digitalization partner for small and medium-sized businesses (SMB).
• The company serves around six million customers and operates across 18 markets in Europe and North America, with its services being accessible worldwide.
• With its Web Presence & Productivity portfolio, IONOS acts as a 'one-stop shop' for all digitalization needs: from domains and web hosting to classic website builders and do-it-yourself solutions, from e-commerce to online marketing tools.
• In addition, the company offers Cloud Solutions to enterprises who are looking to move to the cloud as their businesses evolve.

Equal Opportunity

• We value diversity and welcome all applications - regardless of, for example, gender, nationality, ethnic or social origin, religion, disability, age as well as sexual orientation and identity, physical characteristics, marital status or any other irrelevant factor subject to applicable law.